Days Set Up
Tuesday - Saturday
Analytic Time

4 - 9 days

MiChart Code
Magnesium, RBC
Soft Order Code

Test Updated:


RBC Magnesium
Magnesium, Erythrocytes

Looking to order a test?

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Inductively Coupled Plasma/Mass Spectrometry (ICP-MS)

Test Usage
Reference Range

4- 6.4 mg/dL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Instructions

Royal blue (trace element) and/or Metal-Free aliquot tubes are available from MLabs (800-862-7284). Collect blood in a royal blue top (trace element) tube with EDTA (K2). Centrifuge and aliquot rbcs into a metal-free tube within 2 hours of collection (KEEP red blood cells). Refrigerate. Plasma can be discarded when aliquotting.

Red Top Tube
Normal Volume
0.5 mL packed RBC (plasma discarded)
Minimum Volume
0.3 mL packed RBC (plasma discarded)

Billing Information

CPT Code
Pro Fee Code
Insurance Auth Info

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.